Instead of grpcui
grpcui alternatives
grpcui puts a browser-based interface around gRPC calls, with schema discovery through reflection, .proto files, or protosets. Its dynamic protobuf forms support well-known types, oneofs, and maps, while the response view shows messages, errors, headers, and trailers. Developers can use it with plaintext, TLS, or mutual TLS servers, and its open-source Go packages can embed the form or full interface in a Go HTTP server. It is free, with Linux, macOS, Windows, web, and self-hosted options.
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Postman
by PostmanFree plan ExtensionLinuxMac+2Multi-protocol API design and monitoring — Postman adds a unified platform for API design, testing, distribution, documentation, and monitoring, while grpcui focuses on gRPC calls.
Free plan · paid from $9/mo (annual) Visit site - 2
Apidog
Free plan APIExtensionLinux+4Spec-driven API workflows and test automation — Apidog adds specification-driven request generation, validation, mocking, automated sequences, and database integrations beyond grpcui's gRPC interaction.
Free plan · paid from $9/user/mo (annual) · 14-day trial Visit site - 3
SoapUI
Free plan Open source APILinuxMac+2Functional and regression testing for web services — SoapUI focuses on functional, regression, and load testing for REST, SOAP, and GraphQL services, unlike grpcui's interactive gRPC requests.
Free plan Visit site - 4
Insomnia
Free plan LinuxMacSelf-hosted+1API collaboration across gRPC and other protocols — Insomnia combines gRPC with HTTP, GraphQL, WebSockets, SOAP, and SSE, and adds API design, mocks, tests, and MCP access.
Free plan · paid from $12/user/mo · 14-day trial Visit site - 5
Bruno
Free plan Open source APIExtensionLinux+3Git-versioned API collections and CI/CD — Bruno supports gRPC alongside REST, GraphQL, and WebSocket APIs, with Git-native collections, a CLI, and CI/CD integration.
Free plan · paid from $6/user/mo (annual) · 14-day trial Visit site - 6
HTTPie
Free plan Open source LinuxMacWeb+1HTTP API debugging in a CLI or graphical app — HTTPie centers on HTTP and API testing, with CLI sessions and a graphical app, rather than grpcui's gRPC server interface.
Free plan Visit site - 7
Hoppscotch
Free plan APILinuxMac+3Collaborative API development and sharing — Hoppscotch adds team workspaces, real-time collaboration, and support for HTTP, GraphQL, WebSocket, Socket.IO, MQTT, and SSE.
Free plan · paid from $6/user/mo (annual) Visit site - 8
Bandura
Free plan LinuxMacSelf-hosted+1 - 9
Evans
Free plan LinuxMacWindows - 10
FintX
Free plan LinuxMacWindows - 11
ghz
Free plan APILinuxSelf-hosted - 12
gRPC CLI
Free plan LinuxMacWindows - 13
BloomRPC Extended
Free plan LinuxMacWindows - 14
GripMock
Free plan APILinuxMac+3 - 15
grpcmd
Free plan LinuxMacWindows - 16
gRPC Swagger
Free plan APISelf-hostedWeb - 17
grpcurl
Free plan LinuxMacSelf-hosted+1 - 18
Chiko
Free plan - 19
Granc
Free plan Linux - 20
grpcmock-go
Free plan LinuxSelf-hosted - 21
ProtoCall
Free plan LinuxMacWeb+1 - 22
protoc-gen-doc
Free plan LinuxMacSelf-hosted+1 - 23
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Mediator
Free plan LinuxMacWindows - 25
gRPC Studio
Free plan LinuxSelf-hostedWeb - 26
sabledocs
Free plan LinuxMacWindows - 27
WireMan
Free plan Linux - 28
grpc-wiremock
Free plan Self-hosted - 29
grpc-docs
Paid LinuxWeb - 30
grpcmock
Paid Self-hosted
Its focus is narrower than an API platform: grpcui has no GraphQL or WebSocket support, automated test runs, API documentation, or team workspaces. Streaming requests must be assembled all at once, and bidirectional streams cannot be interacted with like grpcurl. Alternatives may suit work that spans protocols or needs testing automation, mocking, design, documentation, or collaboration. Compare their protocol coverage and workflows, then weigh browser versus desktop access, self-hosting, and paid tiers. A broader client may add capabilities, but grpcui keeps the task centered on constructing gRPC requests and inspecting server behavior.